Ezimbonini ze-petroleum namakhemikhali, isidingo sezinto ezithembekile nezihlala isikhathi eside sibalulekile. Ngena ama-fluoroelastomers , ikilasi lenjoloba yokwenziwa eseyiyingxenye ebalulekile ekusetshenzisweni okuhlukahlukene ngaphakathi kwalezi zimboni. Kodwa yini ngempela i-fluoroelastomers futhi kungani ithola ukuthandwa okunjalo?
I-Fluoroelastomers iwuhlobo lwe-elastomer ebonisa ukumelana nokushisa, amakhemikhali, nezimo zezulu ezimbi kakhulu. Zenziwe ngenhlanganisela yama-fluoropolymers nama-elastomers, okuholela ekutheni kube into engamelana nezindawo ezinokhahlo namakhemikhali anolaka kalula. Izakhiwo zabo ezihlukile zizenza zilungele ukusetshenziswa kuma-seal, ama-gaskets, ama-O-rings, nezinye izingxenye ezibalulekile ku-petroleum kanye nemishini yokucubungula amakhemikhali.
Ukusetshenziswa kwama-fluoroelastomers ezimbonini ze-petroleum namakhemikhali kukhulu futhi kuhlukahlukene. Ukusuka ezindaweni ezihluza uwoyela kuye ezitshalweni zamakhemikhali, ama-fluoroelastomers adlala indima ebalulekile ekuqinisekiseni ukuphepha nokuthembeka kokusebenza. Zivame ukusetshenziswa ezinhlelweni zokuvala, lapho zinikeza ukumelana okuhle kakhulu namakhemikhali e-corronary, amazinga okushisa aphezulu, nokucindezela. Ukwengeza, ama-fluoroelastomers asetshenziswa ku-tubing, hoses, nasezintweni zolayini, enikeza ukumelana okuphakeme ezinhlobonhlobo zamakhemikhali namafutha.
Enye yezinzuzo ezibalulekile zama-fluoroelastomers ngaphezu kwezinye izinto ukumelana kwawo namakhemikhali okuhlukile. Angakwazi ukumelana nokuchayeka ezintweni ezinolaka njengama-asidi, izincibilikisi, namafutha, ngaphandle kokuhlangabezana nokuwohloka noma ukulahlekelwa ukusebenza. Lokhu kubenza babe ukukhetha okuhle kwezinhlelo zokusebenza lapho ukuhambisana kwamakhemikhali kubalulekile.
Kodwa-ke, ama-fluoroelastomers awanazo izinselele nokulinganiselwa kwawo. Nakuba zihamba kahle ezindaweni eziningi, zingabiza kakhulu uma ziqhathaniswa namanye ama-elastomer. Izindleko zabo eziphezulu zingabalelwa kunqubo yokukhiqiza eyinkimbinkimbi kanye nezithako ezikhethekile ezisetshenziswa ekubunjweni kwazo. Ukwengeza, ama-fluoroelastomers angase angafaneleki izinhlelo zokusebenza ezidinga ukuguquguquka kwezinga lokushisa eliphansi, njengoba evame ukuqina futhi alahlekelwe ukunwebeka ezimeni ezibandayo kakhulu.
Kulesi sihloko, sizongena ngokujulile emhlabeni wama-fluoroelastomers, sihlole izakhiwo zawo, izinhlelo zokusebenza, izinzuzo, kanye nezinselele kanye nemikhawulo abethulayo. Ngokuqonda iqhaza lama-fluoroelastomers ezimbonini zikaphethiloli namakhemikhali, ochwepheshe nabathatha izinqumo bangenza izinqumo ezinolwazi uma kuziwa ekukhetheni izinto ezisetshenziswayo ezifanele kakhulu izidingo zabo ezithile.
Yini amaFluoroelastomers?
Ama-Fluoroelastomers, aziwa nangokuthi ama-FKM (fluorocarbon) elastomers, awuhlobo lwerabha yokwenziwa enikeza ukumelana nokushisa, amakhemikhali, noketshezi oluhlukahlukene. Lawa ma-elastomer asetshenziswa kakhulu ezimbonini lapho kudingeka ama-seal asebenza kahle kakhulu kanye nama-gaskets, njengezimoto, i-aerospace, kanye nokucubungula amakhemikhali.
Enye yezinto ezibalulekile zama-fluoroelastomers amandla awo okumelana namazinga okushisa aphezulu. Angasebenza kahle emazingeni okushisa asukela ku -30°C kuya ku-250°C (-22°F kuya ku-482°F), okuwenza alungele ukusetshenziswa okubandakanya ukushisa okuphezulu kanye nezindawo ezinokhahlo. Lokhu kumelana nokushisa okuphawulekayo kuvumela ama-fluoroelastomers ukuthi agcine amandla awo okuvala futhi avimbele ukuvuza ngisho nangaphansi kwezimo ezimbi kakhulu.
Esinye isici esiphawulekayo sama-fluoroelastomers ukumelana kwawo namakhemikhali okuhle kakhulu. Angakwazi ukumelana nokuchayeka ezinhlobonhlobo zamakhemikhali, okuhlanganisa ama-asidi, izisekelo, izinto zokubasa, izincibilikisi, namafutha. Lokhu kumelana namakhemikhali kwenza ama-fluoroelastomers abe yinketho ekhethwayo yama-seal kanye nama-gaskets ezimbonini lapho ukuthintana noketshezi olunolaka kuvame.
Ngaphezu kokumelana nokushisa kwawo namakhemikhali, ama-fluoroelastomers nawo akhombisa ukumelana nokuguga nokuwohloka. Anempilo ende yesevisi futhi angamelana nokuchayeka isikhathi eside emisebeni ye-UV, i-ozone, nesimo sezulu ngaphandle kokuwohloka. Lokhu kuqina kuvumela ama-fluoroelastomers ukuthi agcine ukusebenza kwawo kokuvala isikhathi eside, kunciphisa isidingo sokushintshwa njalo kanye nokunciphisa isikhathi sokuphumula.
Ngaphezu kwalokho, ama-fluoroelastomers anikeza ukumelana okuhle kakhulu kwesethi yokucindezelwa, okusho ukuthi angakwazi ukugcina ukwakheka kwawo kwasekuqaleni kanye nezakhiwo zokuvala ngisho nangemva kokucindezelwa isikhathi eside. Lesi sici sibalulekile ezinhlelweni zokusebenza lapho i-elastomer ihlale ingaphansi kwengcindezi, iqinisekisa uphawu oluthembekile nolungavuzi.
Izicelo ze-Fluoroelastomers ku-Petroleum and Chemical Industries
Ama-fluoroelastomers abonakale ebaluleke kakhulu ezimbonini ze-petroleum namakhemikhali ngenxa yezakhiwo zawo ezihlukile kanye nokumelana nezimo ezinzima. Lezi zinto ezisebenza ngezindlela eziningi zithole izinhlelo zokusebenza eziningi, eziqinisekisa ukusebenza kahle nokuphepha kwezinqubo ezahlukahlukene kulezi zimboni.
Okunye okugqamile ukusetshenziswa kwama-fluoroelastomer kusezinhlelweni zokuvala uphawu. Isakhiwo samakhemikhali esiyingqayizivele sama-fluoroelastomers siwavumela ukuthi amelane namazinga okushisa aphezulu, amakhemikhali anolaka, kanye nezingcindezi eziphezulu. Lokhu kuzenza zilungele ukusetshenziswa kuma-gaskets, ama-O-rings, nezinye izakhi zokuvala ezibalulekile ekuvimbeleni ukuvuza nokugcina ubuqotho bemishini nezinhlelo. Ngokusebenzisa ama-fluoroelastomers, izimboni zingaqinisekisa ukwethembeka nokuphila isikhathi eside kwezinhlelo zazo zokuvala, zinciphise ubungozi besikhathi esibizayo sokwehla kanye nobungozi bemvelo.
Ngaphezu kwalokho, ama-fluoroelastomers asetshenziswa kabanzi ekukhiqizeni nasekuphatheni imikhiqizo ye-petroleum namakhemikhali. Lawa ma-elastomer ahamba phambili ezindaweni ezigqwalile, awenze afanelekele ukusetshenziswa kumaphampu, amavalvu, nezinhlelo zamapayipi. Ukumelana kwazo nezincibilikisi, izinto zokubasa, ama-asidi, nezinye izinto ezinolaka kuqinisekisa ukuthuthwa okubushelelezi nangempumelelo koketshezi namakhemikhali. Ukumelana namakhemikhali okukhethekile kwama-fluoroelastomers kunomthelela ekuvimbeleni ukuvuza, ukungcoliswa, nokwehluleka kwemishini, okuqinisekisa ukuphepha kanye nekhwalithi yemikhiqizo ecutshungulwayo noma ethuthwayo.
Ngaphezu kokumelana kwawo namakhemikhali, ama-fluoroelastomers nawo akhombisa ukumelana nokushisa okuhle kakhulu. Lesi sakhiwo sibenza babe yigugu ezinhlelweni zokusebenza lapho amazinga okushisa aphezulu ahlangana khona, njengokucwengisiswa kwe-petroleum noma ukukhiqizwa kwamakhemikhali. Ama-Fluoroelastomers angakwazi ukumelana namazinga okushisa angaphezu kuka-200 degrees Celsius ngaphandle kokulahlekelwa izici zawo zomshini noma ukwehlisa isithunzi. Leli khono livumela izimboni ukuthi zisebenze emazingeni okushisa aphakeme, zithuthukise ukusebenza kahle kwenqubo kanye nokukhiqiza.
Izakhiwo ezingavamile ze-fluoroelastomers nazo zinwebeka ekumelana nokuguga nokuwohloka. Lezi zinto ezisetshenziswayo zinempilo ende yesevisi, ngisho nalapho zivezwe endaweni enzima isikhathi eside. Lokhu kuqina kuqinisekisa ukuphila isikhathi eside kwemishini futhi kunciphisa isidingo sokushintshwa njalo, okuholela ekongeni kwezindleko zezimboni.
Izinzuzo ze-Fluoroelastomers ngaphezu kwezinye izinto
I-Fluoroelastomers, eyaziwa nangokuthi i-FKM, iwuhlobo lwerabha yokwenziwa enikeza izinzuzo eziningi ngaphezu kwezinye izinto. Lezi zinhlanganisela eziyingqayizivele zithole ukuthandwa kuzo zonke izimboni ezihlukahlukene ngenxa yezakhiwo zazo ezingavamile nokusebenza ezindaweni ezidinga kakhulu.
Enye yezinzuzo ezibalulekile zama-fluoroelastomers ukumelana kwawo okuhle kakhulu namakhemikhali kanye namazinga okushisa aphezulu. Ngokungafani nezinye izinto, ama-fluoroelastomers angakwazi ukumelana nezinhlobonhlobo zamakhemikhali abolayo, afaka ama-asidi, izinto zokubasa, nezincibilikisi. Lokhu kubenza bafaneleke kakhulu ekusetshenzisweni ezimbonini zezimoto, i-aerospace, kanye ne-chemical processing.
Ngaphezu kokumelana kwawo namakhemikhali, ama-fluoroelastomers abonisa ukuzinza okumangalisayo kokushisa. Bangakwazi ukugcina ubuqotho nokusebenza kwabo ngisho nasemazingeni okushisa aphezulu, bedlula amakhono ama-elastomer avamile. Lokhu kuwenza alungele ukusetshenziswa kuma-seal, ama-gaskets, nama-O-rings ezinhlelweni lapho ukuchayeka ekushiseni kuwukukhathazeka.
Ngaphezu kwalokho, ama-fluoroelastomers anezakhiwo ezihlukile zemishini, okuhlanganisa amandla aqine kakhulu kanye nokumelana nezinyembezi. Lokhu kubenza bakwazi ukumelana nezindawo ezinolaka nokuphathwa kabi, okuqinisekisa ukuqina nokuphila isikhathi eside. Ukuqina kwazo kusethi yokucindezelwa, noma ikhono lokululama ngemva kokucindezelwa, nakho kuyabahlukanisa kwezinye izinto.
Enye inzuzo yama-fluoroelastomers ukukwazi kwawo ukungena kwegesi okuphansi. Lesi sakhiwo sibenza babe ukukhetha okuhle kakhulu kokuvala izinhlelo zokusebenza lapho ukuvikela ukuvuza kwegesi noma uketshezi kubalulekile. Izimboni ezifana nowoyela negesi, ezemithi, nokucubungula ukudla zithembele kuma-fluoroelastomers ukuze zigcine ubuqotho bezinhlelo zazo futhi ziqinisekise ikhwalithi yomkhiqizo.
Ngaphezu kwalokho, ama-fluoroelastomers anikeza ukumelana okuhle kakhulu ne-ozone, isimo sezulu, kanye nemisebe ye-UV. Lokhu kubenza bafanelekele izinhlelo zokusebenza zangaphandle ezivezwe ezimweni ezinzima zemvelo. Ukumelana kwabo nokuwohloka kuqinisekisa ukusebenza okuhlala isikhathi eside futhi kunciphisa izindleko zokulondoloza.
Izinselelo kanye nemikhawulo ye-Fluoroelastomers
I-Fluoroelastomers , eyaziwa nangokuthi i-FKM, iyizinto zokwenziwa ezifana nerabha ezinokumelana okuhle kakhulu nokushisa, amakhemikhali, namafutha. Lezi zakhiwo eziyingqayizivele zenza ama-fluoroelastomers afiseleke kakhulu ezimbonini ezahlukahlukene, okubandakanya ezezimoto, i-aerospace, kanye nokukhiqizwa kwamakhemikhali. Kodwa-ke, naphezu kwezinzuzo zabo eziningi, ama-fluoroelastomers nawo eza nesabelo sawo esifanele sezinselele kanye nemikhawulo.
Enye yezinselelo ezinkulu zama-fluoroelastomers izindleko zawo eziphezulu. Uma kuqhathaniswa namanye ama-elastomer, njengerabha ye-nitrile noma i-silicone, ama-fluoroelastomers abiza kakhulu ukuwakhiqiza. Lokhu kubangelwa ikakhulukazi inqubo yokukhiqiza eyinkimbinkimbi kanye nokushoda kwezinto zokusetshenziswa. Ngenxa yalokho, ama-fluoroelastomers angase angabi yindlela esebenzisekayo yezinhlelo zokusebenza ezingazweli izindleko.
Omunye umkhawulo wama-fluoroelastomers ukuguquguquka kwawo okulinganiselwe kwezinga lokushisa eliphansi. Nakuba lezi zinto ezisetshenziswayo zibonisa ukumelana okuhle kakhulu nokushisa okuphezulu, zivame ukuqina futhi zilahlekelwe ukunwebeka kwazo emazingeni okushisa aphansi kakhulu. Lokhu kungaba yisiphazamiso esibalulekile ezimbonini lapho ukusebenza kwezinga lokushisa eliphansi kubalulekile, njengesiqandisi noma izinhlelo zokusebenza ze-cryogenic.
Ngaphezu kwalokho, ama-fluoroelastomers awakwazi ukumelana nokukhala kanye nokuhuzuka uma kuqhathaniswa namanye ama-elastomer. Lokhu kusho ukuthi zingase zingamelani nokuguga nokudabuka noma amandla emishini anolaka. Kuzinhlelo zokusebenza lapho okokusebenza kungaphansi kokungqubuzana noma umthelela, amanye ama-elastomer anokumelana kangcono nokuhuzuka angase afaneleke kakhulu.
Ukwengeza, ama-fluoroelastomers angaba inselele ukucubungula nokubumba. I-viscosity yabo ephezulu kanye nokugeleza okuphansi kwenza kube nzima ukufeza izimo eziyinkimbinkimbi noma izingxenye ezinezindonga ezincane. Lokhu kungase kube nomkhawulo ezimbonini ezidinga imiklamo eyinkimbinkimbi noma eyenziwe ngokwezifiso, njengemikhakha yezogesi noma yemishini yezokwelapha.
Naphezu kwalezi zinselele kanye nemikhawulo, ama-fluoroelastomers ahlala ewukukhetha okudumile ezinhlelweni eziningi ngenxa yokusimama kwawo okushisayo nokungazweli kwamakhemikhali. Zisetshenziswa kakhulu kuma-seal, ama-gaskets, ama-O-rings, nezinye izinto zokuvala ezidinga ukwethembeka nokuqina ezindaweni ezinokhahlo.
Isiphetho
Ama-Fluoroelastomers ayinto eguquguqukayo nethembekile yokuvala izinhlelo zokusebenza ezimbonini ezidinga ama-elastomer asebenza kahle kakhulu. Banikeza ukumelana nokushisa okukhethekile, ukumelana namakhemikhali, ukuqina, nokumelana nesethi yokucindezelwa, okubenza balungele izindawo ezidinga kakhulu. Adlala indima ebalulekile ezimbonini ze-petroleum namakhemikhali, ahlinzekela ukumelana namakhemikhali, ukumelana nokushisa, nokuqina ezinhlelweni zokuvala uphawu, izinqubo zokukhiqiza, nezinhlelo zokuhamba. Ama-Fluoroelastomers ahlinzeka ngezinzuzo eziningi ngaphezu kwezinye izinto, okuhlanganisa ukumelana okuphezulu namakhemikhali namazinga okushisa adlulele, izakhiwo ezihlukile zemishini, ukungena kwegesi okuphansi, nokumelana ne-ozone nesimo sezulu. Kodwa-ke, futhi iza nezinselele kanye nemikhawulo efana nezindleko eziphezulu, ukuguquguquka okulinganiselwe kwezinga lokushisa eliphansi, ukumelana nokukhala okungekuhle nokuhuzuka, nobunzima bokucubungula nokubumba. Izimboni zidinga ukucubungula lezi zici ngokucophelela lapho zikhetha i-elastomer efanelekile yokusetshenziswa kwazo okuqondile.
